MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress upload storage, suggesting a phishing or malware distribution attempt. The presence of embedded JavaScript indicates an attempt to execute malicious code within the PDF viewer.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL http://sten.kr/club/data/userfiles/file/20210803050102.pdf In PDF document text
- http://valkexclusief.reviews/app/webroot/files/userfiles/files/60576898455.pdfIn PDF document text
- http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce852bc923---51232408686.pdfIn PDF document text
- http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609dbce16992e---93933801732.pdfIn PDF document text
- https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/7l4gnckd6ae42j78ck2sh4o4m5/96796162752.pdfIn PDF document text
- http://xn--b1adcbbai1bezln.xn--p1ai/content/File/rezegilixajelarim.pdfIn PDF document text
- http://thrifty-uy.com/files/others/vejefuxiratusu.pdfIn PDF document text
- http://mayamalay.com/clients/874202/File/zofivafagiwov.pdfIn PDF document text
- https://www.tangelo.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607451fd523bb---dagidafekabawanowova.pdfIn PDF document text
- http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/hqmvmrqjff6794sj43bk0q36p5/kurijifavudadiju.pdfIn PDF document text
- http://gopherandsquirrelcontrol.com/admin/images/file/doxezowofoxabuperux.pdfIn PDF document text
- https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/16099f4365487b---233052470.pdfIn PDF document text
- http://kantoromega.pl/userfiles/file/zofatuv.pdfIn PDF document text
- http://ajivikafinance.com/userfiles/file/puwegigenilupokikivigav.pdfIn PDF document text
- https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/lcqoo9ip2mdt5alukebn89r8eq/mejetak.pdfIn PDF document text
- https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/b54b235f91a437d3c7f72d2726890e45/84784507560.pdfIn PDF document text
- https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/160868d2c7e768---75843368284.pdfIn PDF document text
- https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077a63ec1bae---tuxubopuf.pdfIn PDF document text
- http://marcth.pl/media/fck/file/tifitokanaxaberakini.pdfIn PDF document text
- https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/946aea3eceaffe85dd547aebe1dcc912/gotibaduxumoxujemizus.pdfIn PDF document text
- https://empezo.xyz/js/ckfinder/userfiles/files/rakes.pdfIn PDF document text
- https://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/70406469552.pdfIn PDF document text
- http://www.frank-diagn.hu/userfiles/files/xiniweluvi.pdfIn PDF document text
- http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a689e058122---vumokamifijemawivaxilo.pdfIn PDF document text
- https://motecx.com/images/file/99092750174.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=nse+down+todayPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000eb0b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB0B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0001031d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1031D | 18924 bytes |
SHA-256: 34a0189116e661d3a256f5758e2e4aab2d1ce2b551b59e7100cab5b3f0b5664f |
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font_02_sfnt_off000133e7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x133E7 | 10180 bytes |
SHA-256: e37725169d08921b1b74dbb589e6b3b8e6c8f60305e6b6bda96456afb015e76e |
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